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Warning: We expect the Dart libraries to undergo potentially sweeping changes before Dart goes to alpha. This document is relevant as of 2011-12-22.

Intro

Dart is a "batteries included" effort to help app developers build modern web apps. An important "battery" is the bundled core Dart libraries, providing common and rich functionality. Dart is building a solution for large, complex web apps, and providing well tested, integrated, and common libraries is key to helping a web app developer be more productive out of the box.

The Collection libraries are a crucial set of APIs that Dart developers get for free. Much more than simple arrays and maps, the Collection library includes standard ways to filter, iterate, inspect, compose, and sort your data. This post specifically looks at List<E>, Dart's ordered, indexable collection of objects.

Warning: We expect the Dart libraries to undergo potentially sweeping changes before Dart goes to alpha. This document is relevant as of 2012-01-02.

Intro

Dart is not just a language, but a full "batteries included" effort to create a productive, familiar, and fun environment for the modern web app developer. The bundled libraries are one such "battery", including many common classes and utilities such as date manipulation, regular expressions, even asynchronous constructs like Future and Promise.

Probably the most used set of libraries will be the Collections, such as List, Map, and Set. In this post, we'll take a look at Map, which is a mapping of keys to values.

In Dart, a Map is an interface designed to manipulate a collection of keys which point to values. Maps can have null values, and can have parameterized types. Note, Maps do not subclass the Collection interfa…